Sonic power unleashed!Six reasons to hide!From the depths of Mata Nui, they came... six elite Bohrok, the Bohrok-Kal, with one mission: to free the Bohrok queens and unleash the swarms again! Only the Toa Nuva stand in their way... but the Bohrok-Kal have stolen the elemental powers of the heroes, leaving them helpless. Will the Toa Nuva's first adventure be their last?Kohrak-Kal's sonic powers are so great, even the other Bohrok-Kal must beware of them! Its mastery over sound allows it to create sonic barriers, cause objects to stress and shatter, or even create objects made completely of solid sound!